<template>
  <div>
    <label class="switch">
      <input type="checkbox" id="toggleButton" @click.stop="change($event)">
      <span class="slider round"></span>
    </label>
  </div>
</template>

<script>
export default {
  name: 'Button',
  methods: {
    change(e) {
      if (e.target.checked) {
        document.querySelector("link#theme").href = `./css/jianyue.css`;
        $bus.$emit("aMsg", true);
      } else {
        document.querySelector("link#theme").removeAttribute("href")
        $bus.$emit("aMsg", false);
      }
    }
  },
  mounted() {
    let link = document.createElement("link");
    link.type = "text/css";
    link.id = "theme";
    link.rel = "stylesheet";
    document.getElementsByTagName("head")[0].appendChild(link);
  }
}
</script>
   
<style scoped>
/*  SWITCH  */
.switch {
  position: absolute;
  top: 10px;
  left: 20px;
  display: inline-block;
  width: 60px;
  height: 34px;
  text-align: right;
}

.switch input {
  display: none;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  -webkit-transition: .4s;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  -webkit-transition: .4s;
  transition: .4s;
}

input:checked+.slider {
  background-color: #2195f383;
}

input:focus+.slider {
  box-shadow: 0 0 1px #2196F3;
}

input:checked+.slider:before {
  -webkit-transform: translateX(26px);
  -ms-transform: translateX(26px);
  transform: translateX(26px);
}

/* Rounded sliders */
.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}
</style>